Save. Brand X Pictures/Brand X Pictures/Getty Images. A number of issues cause vertical lines on your computer screen, ranging from software incompatibilities with the computer's drivers to hardware problems involving the magnetic field of the monitor.
1) Segmented-Flow Analysis (SFA) The reaction stream is segmented with bubbles of air or nitrogen to reduce inter-sample dispersion. 2) Flow Injection Analysis (FIA) There are no air bubbles in the reaction stream.
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